400 Thread Count Sheets
Superior's 400 thread count sheets sit one step above 300 thread count: a little heavier, with the same smooth sateen weave. The sateen sets in this collection are cotton blends, in solid colours or a woven stripe, and there is also a 400 thread count modal set made to sleep cool. Every set has a deep-pocket fitted sheet for mattresses up to 18 inches thick, plus a flat sheet and pillowcases.
- Cotton-blend sateen, solid — smooth with a subtle sheen — Buy for an everyday bed with more weight than 300 thread count.
- Cotton-blend sateen, stripe — the same sateen with a woven stripe — Buy if you want texture instead of a plain solid.
- Modal cooling set — 100% modal from beechwood, wrinkle resistant — Buy if you run warm at night.
- Deep pockets on every set — fits mattresses up to 18 inches — Buy for most standard mattresses.
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Most Popular in This Collection
- 400 Thread Count Modal Cooling Bed Sheet Set — 100% modal from beechwood, wrinkle resistant and colourfast, with deep pockets.
- 400 Thread Count Sateen Bed Sheet Set — a cotton-blend sateen in solid colours with a subtle shimmer.
- 400 Thread Count Sateen Stripe Bed Sheet Set — a woven stripe, with open-end pillowcases and a 4-inch hem.
Choosing Between Sateen and Modal
Both options here are smooth, but they feel different. The sateen sets are a cotton blend: they have the familiar weight of cotton, a soft sheen and a neat, tailored look on the bed. The modal set is made from beechwood fiber; it feels silkier, drapes closer and is sold as a cooling option, so it suits warm bedrooms.
If you want 100% Egyptian cotton, it starts at 650 thread count; see our 650 thread count Egyptian cotton sheets. For a lighter set in more fibers, see 300 thread count sheets.
What's in the Collection
- Solid sateen: cotton blend; flat sheet, fitted sheet and two pillowcases, Full to California King.
- Stripe sateen: woven stripe with a 4-inch pillowcase hem; Twin and Twin XL include one pillowcase.
- Modal cooling: 100% modal from beechwood, Twin XL to California King.
- Fit: deep-pocket fitted sheets for mattresses up to 18 inches.
Care & Maintenance
- Wash before first use since natural fibers can shrink slightly.
- Machine wash cold on a gentle cycle; avoid bleach.
- Tumble dry low to protect the sateen finish and the modal drape.
- Skip fabric softener on the sateen sets, which can dull their sheen.
Frequently Asked Questions
Are 400 thread count sheets Egyptian cotton?
The sateen sets in this collection are cotton blends, even though their product titles mention Egyptian cotton. Superior's 100% Egyptian cotton sheets start at 650 thread count.
What is the difference between the solid and stripe sets?
Same sateen weave and thread count. The stripe set adds a woven stripe pattern instead of a plain solid colour.
Is the modal set cooler than the sateen?
The modal set is sold as a cooling option and is 100% modal from beechwood, which feels lighter and silkier than cotton. The sateen sets feel slightly heavier.
Do these sheets fit a thick mattress?
Yes. The fitted sheets have deep pockets for mattresses up to 18 inches thick.
How do I wash 400 thread count sheets?
Machine wash cold on a gentle cycle, tumble dry low, and skip fabric softener on the sateen sets.